| #1 | WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin | 36 | 18 | 146 | 4m+ | | | Direct Query |
| #2 | MC4WP: Mailchimp for WordPress | 57 | | 238 | 1m+ | | | Non-prefixed global variable |
| #3 | Easy WP SMTP – WordPress SMTP and Email Logs: Gmail, Office 365, Outlook, Custom SMTP, and more | 15 | 32 | 163 | 500k+ | | | Direct Query |
| #4 | Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App | 22 | 1,581 | 2,326 | 300k+ | | | Non-prefixed global variable |
| #5 | WP Mail Logging | 34 | 76 | 258 | 300k+ | | | Nonce verification recommended |
| #6 | Mailchimp for WooCommerce | 24 | 523 | 663 | 200k+ | | | Non-prefixed global variable |
| #7 | Site Mailer – SMTP Replacement, Email API Deliverability & Email Log | 74 | 8 | 23 | 200k+ | | | Output is not escaped |
| #8 | SureMail – SMTP and Email Logs Plugin with Amazon SES, Postmark, and Other Providers | 80 | 45 | 65 | 200k+ | | | Non-prefixed hook name |
| #9 | Check & Log Email – Easy Email Testing & Mail logging | 95 | 3 | 11 | 100k+ | | | Non-prefixed constant |
| #10 | Kadence WooCommerce Email Designer | 34 | 119 | 230 | 100k+ | | | Non-prefixed global variable |
| #11 | Klaviyo | 79 | 26 | 86 | 100k+ | | | Non-prefixed function |
| #12 | Email Log | 95 | 5 | 53 | 80k+ | | | Non-prefixed hook name |
| #13 | SMTP Mailer | 42 | 51 | 49 | 70k+ | | | Unsafe printing function |
| #14 | Mailchimp List Subscribe Form | 86 | 22 | 156 | 60k+ | | | Non-prefixed global variable |
| #15 | Solid Mail – SMTP email and logging made by SolidWP | 68 | 16 | 17 | 60k+ | | | Database parameter is not escaped |
| #16 | Change Admin Email | 84 | 4 | 4 | 50k+ | | | Missing nonce verification |
| #17 | ActiveCampaign Postmark for WordPress | 36 | 47 | 75 | 50k+ | | | Text Domain Mismatch |
| #18 | Disqus Comment System | 54 | 17 | 33 | 40k+ | | | Non-prefixed hook name |
| #19 | Customize WordPress Emails and Alerts – Better Notifications for WP | 37 | 64 | 47 | 30k+ | | | Missing Arg Domain |
| #20 | Disable auto-update Email Notifications | 97 | 3 | 2 | 30k+ | | | Missing direct file access protection |
| #21 | SMTP2GO for WordPress – Email Made Easy | 33 | 186 | 111 | 30k+ | | | Output is not escaped |
| #22 | Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro | 45 | 26 | 117 | 20k+ | | | Non-prefixed hook name |
| #23 | BlossomThemes Email Newsletter | 23 | 337 | 239 | 20k+ | | | Output is not escaped |
| #24 | Change Mail Sender | 76 | 97 | 19 | 20k+ | | | Text Domain Mismatch |
| #25 | Email Template Customizer for WooCommerce | 55 | 552 | 248 | 20k+ | | | Text Domain Mismatch |
| #26 | Email Templates Customizer and Designer for WordPress and WooCommerce | 30 | 250 | 349 | 20k+ | | | Non-prefixed global variable |
| #27 | Gravity PDF | 57 | 116 | 152 | 20k+ | | | Non-prefixed global variable |
| #28 | Print, PDF, Email by PrintFriendly | 35 | 220 | 29 | 20k+ | | | Unsafe printing function |
| #29 | Email Template Designer – WP HTML Mail | 34 | 62 | 80 | 20k+ | | | badly named files |
| #30 | Zoho Mail for WordPress | 46 | 29 | 48 | 20k+ | | | Request data is not unslashed |
| #31 | Disable Theme and Plugin Auto-Update Emails | 79 | 21 | 5 | 10k+ | | | Text Domain Mismatch |
| #32 | E2Pdf – Export Pdf Tool for WordPress | 22 | 1,075 | 836 | 10k+ | | | Unsafe printing function |
| #33 | Gmail SMTP | 37 | 84 | 73 | 10k+ | | | Unsafe printing function |
| #34 | Mailjet Email Marketing | 24 | 435 | 206 | 10k+ | | | Unsafe printing function |
| #35 | Notification – Custom Notifications and Alerts for WordPress | 28 | 186 | 219 | 10k+ | | | Non-prefixed global variable |
| #36 | Postie | 23 | 407 | 261 | 10k+ | | | Output is not escaped |
| #37 | SendWP | 37 | 47 | 42 | 10k+ | | | Output is not escaped |
| #38 | Stop WP Emails Going to Spam | 99 | 1 | 3 | 10k+ | | | trademarked term |
| #39 | Subscribe to Comments | 36 | 129 | 163 | 10k+ | | | Output is not escaped |
| #40 | Subscribe2 – Form, Email Subscribers & Newsletters | 32 | 32 | 410 | 10k+ | | | Direct Query |
| #41 | Website Pop-up Builder by BDOW! (formerly Sumo): Pop-ups + forms for email opt-ins and lead generation | 37 | 42 | 33 | 10k+ | | | Output is not escaped |
| #42 | WP Change Default From Email | 65 | 51 | 7 | 10k+ | | | Non Singular String Literal Domain |
| #43 | WP Mail Log | 42 | 42 | 29 | 10k+ | | | Text Domain Mismatch |
| #44 | WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) | 28 | 209 | 217 | 10k+ | | | Exception output is not escaped |
| #45 | WPO365 | MICROSOFT 365 GRAPH MAILER | 37 | 112 | 83 | 10k+ | | | Text Domain Mismatch |
| #46 | Allow Multiple Accounts | 40 | 115 | 19 | 9k+ | | | Non Singular String Literal Domain |
| #47 | AWeber – Free Sign Up Form and Landing Page Builder Plugin for Lead Generation and Email Newsletter Growth | 33 | 33 | 229 | 9k+ | | | Non-prefixed global variable |
| #48 | Contact Form Email | 25 | 409 | 898 | 9k+ | | | Non-prefixed global variable |
| #49 | Tablesome Table – Contact Form DB – WPForms, CF7, Gravity, Forminator, Fluent | 22 | 225 | 519 | 8k+ | | | error log error log |
| #50 | WP Mailto Links – Protect Email Addresses | 35 | 95 | 69 | 8k+ | | | Output is not escaped |